Ryoichi Mukai

This inventor holds 32 USPTO granted patents and 1 published patent application, primarily in Magnetic Recording Technology. Top assignees: Fujitsu Corporation, Showa Denko K.k.. Active years: 1985-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoichi Mukai. Retrieved from https://idiyas.com/inventor/ryoichi-mukai

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 32 (Patent Applications = 1)

% Patents Active = 81.3

Average Co-Inventor Count = 1.2

ph-index = 14

Forward Citations = 441(Granted Patents)

Location History:

Kawaguchi, JP (1985)
Kanagawa, JP (1988)
Kawasaki, JP (1985 - 2010)

Company Filing History:

Years Active: 1985-2010

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Areas of Expertise:

Magnetic Recording Medium

Polycrystalline Structure

Semiconductor Device

Magnetic Storage Device

Manufacturing Method

Fabrication Process

Concentric Magnetic Tracks

Epitaxial Growth

Conductive Layers

Thin Film

Surface Morphology

Laser Planarization

32 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7799446 - Perpendicular magnetic recording medium and manufacturing method thereof, magnetic recording apparatus (2010-09-21),

2. 7767322 - Perpendicular magnetic recording medium, method of producing the same, and magnetic storage device (2010-08-03),

3. 7732070 - Perpendicular magnetic recording medium, method of manufacturing the same, and magnetic storage unit (2010-06-08),

4. 7270898 - Polycrystalline structure of ordered alloy and method of making the same (2007-09-18),

5. 7270897 - Magnetic recording medium, method of manufacturing the same medium and magnetic disc drive (2007-09-18),

6. 7179548 - Polycrystalline structure film and method of making the same (2007-02-20),

7. 7132177 - Magnetic recording medium and fabrication method thereof (2006-11-07),

8. 7008705 - Layered polycrystalline structure and method of making the same (2006-03-07),

9. 6682833 - Magnetic recording medium and production process thereof (2004-01-27),

10. 6586044 - Method for manufacturing a magnetic hard disk having concentric magnetic tracks with flat surface (2003-07-01),

11. 6583957 - Magnetic hard disk having concentric magnetic tracks with flat surface and fabrication method thereof (2003-06-24),

12. 6277484 - Magnetic recording media and method of producing the same (2001-08-21),

13. 6171676 - Magnetic recording medium containing fine magnetic crystal grains and its manufacture (2001-01-09),

14. 5759617 - Production process for a hard disk magnetic recording medium (1998-06-02),

15. 5518967 - Process for producing a semiconductor device capable of planarizing a (1996-05-21),

Title: Ryoichi Mukai: Innovator in Perpendicular Magnetic Recording Technologies

Introduction

Ryoichi Mukai, based in Kawasaki, Japan, is a prolific inventor with a remarkable portfolio comprising 32 patents. His groundbreaking work primarily focuses on advancements within the realms of magnetic recording technologies, especially in perpendicular magnetic recording mediums, which are essential for modern data storage.

Latest Patents

Mukai's recent patents feature innovative designs for perpendicular magnetic recording mediums and the methods used to manufacture them. One notable invention includes a perpendicular magnetic recording medium that integrates a soft-magnetic backing layer and an orientation control layer among several other layers designed for enhanced performance. The recording layer contains magnetic particles that exhibit an easy axis of magnetization that is oriented perpendicularly to the surface of the substrate, ensuring efficient recording capabilities. This recording medium also employs a protective film and lubrication layer, strategically designed to improve durability and performance.

Another significant invention revolves around a magnetic recording apparatus that incorporates a columnar granular structure, facilitating an effective arrangement of magnetic particles that optimize data storage. These patents illustrate Mukai's commitment to refining magnetic recording technologies and pushing the boundaries of innovation in this field.

Career Highlights

Throughout his career, Ryoichi Mukai has had an impactful presence in various corporations, notably Fujitsu Corporation and Showa Denko K.K. His roles in these organizations have enabled him to develop and patent technologies that significantly enhance data recording techniques, contributing to the evolution of data storage solutions.

Collaborations

Mukai has collaborated with notable professionals, including Hiroto Takeshita and Wataru Yamagishi. These collaborations have stimulated innovative ideas and fostered creativity, leading to significant advancements in their shared field of magnetic recording technology.

Conclusion

Ryoichi Mukai epitomizes the essence of innovation in the technology sector through his extensive research and numerous patents. His contributions, particularly in magnetic recording mediums, have set a benchmark for future developments and underscore his status as a leading inventor. As technology continues to evolve, Mukai's patents will undoubtedly play a critical role in shaping the future of data storage.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

1 patent pending: